From 2353a35dc8bd948145f5cd3ac6e65ebb1995c323 Mon Sep 17 00:00:00 2001
From: cinap_lenrek <cinap_lenrek@gmx.de>
Date: Tue, 30 Jul 2013 22:51:40 +0200
Subject: ether82567: determine phy number by probing phy id registers

link status not working on 82567 was due to wrong phy number
used. instead of hardcoding the phy numbers, probe the phys
by reading id1 and id2 registers (code stolen from ethermii).
---
 sys/src/9/pc/ether82563.c | 81 ++++++++++++++++++++++++-----------------------
 1 file changed, 41 insertions(+), 40 deletions(-)

diff --git a/sys/src/9/pc/ether82563.c b/sys/src/9/pc/ether82563.c
index 6fea78ce8..1d7e28496 100644
--- a/sys/src/9/pc/ether82563.c
+++ b/sys/src/9/pc/ether82563.c
@@ -169,6 +169,9 @@ enum {					/* Mdic */
 
 enum {					/* phy interface */
 	Phyctl		= 0,		/* phy ctl register */
+	Physr		= 1,		/* phy status register */
+	Phyid1		= 2,		/* phy id1 */
+	Phyid2		= 3,		/* phy id2 */
 	Phyisr		= 19,		/* 82563 phy interrupt status register */
 	Phylhr		= 19,		/* 8257[12] link health register */
 	Physsr		= 17,		/* phy secondary status register */
@@ -1116,18 +1119,39 @@ phywrite(Ctlr *c, uint phyno, uint reg, ushort v)
 }
 
 static void
-phyerrata(Ether *e, Ctlr *c)
+phyerrata(Ether *e, Ctlr *c, uint phyno)
 {
 	if(e->mbps == 0){
 		if(c->phyerrata == 0){
 			c->phyerrata++;
-			phywrite(c, 1, Phyprst, Prst);	/* try a port reset */
+			phywrite(c, phyno, Phyprst, Prst);	/* try a port reset */
 			print("%s: phy port reset\n", cname(c));
 		}
 	}else
 		c->phyerrata = 0;
 }
 
+static uint
+phyprobe(Ctlr *c, uint mask)
+{
+	uint phy, phyno;
+
+	for(phyno=0; mask != 0; phyno++, mask>>=1){
+		if((mask & 1) == 0)
+			continue;
+		if(phyread(c, phyno, Physr) == ~0)
+			continue;
+		phy = (phyread(c, phyno, Phyid1) & 0x3FFF)<<6;
+		phy |= phyread(c, phyno, Phyid2) >> 10;
+		if(phy == 0xFFFFF || phy == 0)
+			continue;
+		print("%s: phy%d oui %#ux\n", cname(c), phyno, phy);
+		return phyno;
+	}
+	print("%s: no phy\n", cname(c));
+	return ~0;
+}
+
 static void
 phyl79proc(void *v)
 {
@@ -1138,9 +1162,9 @@ phyl79proc(void *v)
 	e = v;
 	c = e->ctlr;
 
-	phyno = 1;
-	if(c->type == i82579)
-		phyno = 2;
+	phyno = phyprobe(c, 3<<1);
+	if(phyno == ~0)
+		return;
 
 	for(;;){
 		phy = phyread(c, phyno, Phystat);
@@ -1171,17 +1195,21 @@ next:
 static void
 phylproc(void *v)
 {
-	uint a, i, phy;
+	uint a, i, phy, phyno;
 	Ctlr *c;
 	Ether *e;
 
 	e = v;
 	c = e->ctlr;
 
-	if(c->type == i82573 && (phy = phyread(c, 1, Phyier)) != ~0)
-		phywrite(c, 1, Phyier, phy | Lscie | Ancie | Spdie | Panie);
+	phyno = phyprobe(c, 3<<1);
+	if(phyno == ~0)
+		return;
+
+	if(c->type == i82573 && (phy = phyread(c, phyno, Phyier)) != ~0)
+		phywrite(c, phyno, Phyier, phy | Lscie | Ancie | Spdie | Panie);
 	for(;;){
-		phy = phyread(c, 1, Physsr);
+		phy = phyread(c, phyno, Physsr);
 		if(phy == ~0){
 			phy = 0;
 			i = 3;
@@ -1196,18 +1224,18 @@ phylproc(void *v)
 		case i82578:
 		case i82578m:
 		case i82583:
-			a = phyread(c, 1, Phyisr) & Ane;
+			a = phyread(c, phyno, Phyisr) & Ane;
 			break;
 		case i82571:
 		case i82572:
 		case i82575:
 		case i82576:
-			a = phyread(c, 1, Phylhr) & Anf;
+			a = phyread(c, phyno, Phylhr) & Anf;
 			i = (i-1) & 3;
 			break;
 		}
 		if(a)
-			phywrite(c, 1, Phyctl, phyread(c, 1, Phyctl) | Ran | Ean);
+			phywrite(c, phyno, Phyctl, phyread(c, phyno, Phyctl) | Ran | Ean);
 next:
 		e->link = (phy & Rtlink) != 0;
 		if(e->link == 0)
@@ -1215,7 +1243,7 @@ next:
 		c->speeds[i]++;
 		e->mbps = speedtab[i];
 		if(c->type == i82563)
-			phyerrata(e, c);
+			phyerrata(e, c, phyno);
 		c->lim = 0;
 		i82563im(c, Lsc);
 		c->lsleep++;
@@ -1280,31 +1308,6 @@ serdeslproc(void *v)
 	}
 }
 
-static void
-maclproc(void *v)
-{
-	uint i;
-	Ctlr *c;
-	Ether *e;
-
-	e = v;
-	c = e->ctlr;
-
-	for(;;){
-		i = csr32r(c, Status);
-		e->link = (i & Lu) != 0;
-		i = (i >> 6) & 3;	/* link speed 6:7 */
-		if(e->link == 0)
-			i = 3;
-		c->speeds[i]++;
-		e->mbps = speedtab[i];
-		c->lim = 0;
-		i82563im(c, Lsc);
-		c->lsleep++;
-		sleep(&c->lrendez, i82563lim, c);
-	}
-}
-
 static void
 i82563attach(Ether *edev)
 {
@@ -1354,8 +1357,6 @@ i82563attach(Ether *edev)
 		kproc(name, pcslproc, edev);		/* phy based serdes */
 	else if(cttab[ctlr->type].flag & F79phy)
 		kproc(name, phyl79proc, edev);
-	else if(ctlr->type == i82567)
-		kproc(name, maclproc, edev);		/* use mac link status */
 	else
 		kproc(name, phylproc, edev);
 
-- 
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